Magnetic separator for ilmenite beneficiation

Abstract

A magnetic separator for ilmenite beneficiation comprises an ore pulp runner and a multi-stage magnetic separation assembly. The multi-stage magnetic separation assembly is arranged on the ore pulp runner and comprises a first magnetic separation unit, a second magnetic separation unit and a third magnetic separation unit, the first magnetic separation unit comprises a low magnetic roller, the second magnetic separation unit comprises a medium magnetic roller, and the third magnetic separation unit comprises a high magnetic roller. According to the device, the low-middle-high three-gear magnetic rollers are arranged in sequence, fine treatment is carried out on minerals with different magnetisms, the enrichment precision of ilmenite is improved, the strength and the arrangement sequence of the magnetic rollers can be freely adjusted according to ore pulp components and treatment requirements, and the device is suitable for various mineral separation processes; through multi-stage adsorption and recovery, the beneficiation recovery rate of ilmenite is remarkably improved, useful mineral loss is reduced, meanwhile, the magnetic roller can be independently disassembled, assembled and replaced, and maintenance and magnetic field adjustment are facilitated.

Description

Technical Field

[0001] The invention belongs to the technical field of mineral processing equipment, and in particular relates to a magnetic separator for ilmenite mineral processing. Background Art

[0002] Ilmenite is an important metallic mineral resource, widely used in metallurgy, aerospace, chemical engineering, and other fields. To effectively extract ilmenite from raw ore, the mineral processing process typically includes multiple steps such as crushing, grinding, screening, and magnetic separation, among which magnetic separation is the key step in processing weakly magnetic minerals such as ilmenite.

[0003] Most of the existing magnetic separation equipment adopts a single magnetic separation structure, such as a drum or belt magnetic separation structure, which has weak magnetic field strength adjustment ability, separation of screening and magnetic separation functions, complex equipment structure, large footprint, and the following technical difficulties when processing weakly magnetic minerals such as ilmenite: Most traditional magnetic separators only have a single magnetic separation function. The single function requires multiple processes to be completed in series through multiple devices. The overall structure of the equipment is complex and difficult to install and debug. At the same time, the magnetic field strength of some magnetic separation equipment is fixed or the adjustment range is limited, making it difficult to achieve precise separation of ilmenite of different grades or compositions, resulting in the ineffective recovery of some useful minerals and waste of resources. Summary of the Invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a magnetic separator for ilmenite beneficiation, which can at least partially solve the above technical problems.

[0005] The technical solution adopted by the present invention is as follows: The present invention proposes a magnetic separator for ilmenite beneficiation, comprising a slurry flow channel and a multi-stage magnetic separation component, wherein the multi-stage magnetic separation component is arranged on the slurry flow channel; the multi-stage magnetic separation component comprises a first magnetic separation unit, a second magnetic separation unit and a third magnetic separation unit, the first magnetic separation unit comprises a low magnetic roller, the second magnetic separation unit comprises a medium magnetic roller, and the third magnetic separation unit comprises a high magnetic roller, and the low magnetic roller, the medium magnetic roller and the high magnetic roller are sequentially arranged on the slurry flow channel; the magnetic induction intensity of the low magnetic roller is 0.5~0.8T, the magnetic induction intensity of the medium magnetic roller is 1.0~1.3T, and the magnetic induction intensity of the high magnetic roller is 1.5~1.8T.

[0006] Furthermore, a rubber pad and a mineral processing groove are provided on the slurry flow channel, and the rubber pad covers the upper portion; the low magnetic roller, the medium magnetic roller and the high magnetic roller are all provided in the mineral processing groove.

[0007] Furthermore, an elastic pressure block is provided in the mineral processing groove, and the elastic pressure block is slidably connected in the mineral processing groove. The elastic pressure block is located between the mineral processing groove and the rubber pad; a compression spring is provided between the elastic pressure block and the mineral processing groove, and both ends of the compression spring are connected to the elastic pressure block and the mineral processing groove.

[0008] Furthermore, the rubber pad is provided with speed reduction strips, and the speed reduction strips are arranged in a linear array on the surface of the rubber pad.

[0009] Furthermore, the first magnetic separation unit also includes a first scraper, a first discharge channel and a strong magnetic mineral container. The first scraper is tangent to the surface of the low magnetic roller. One end of the first discharge channel is connected to the first scraper and the other end is connected to the strong magnetic mineral container.

[0010] Furthermore, the second magnetic separation unit also includes a second scraper, a second discharge channel and an ilmenite container. The second scraper is tangent to the surface of the middle magnetic roller. One end of the second discharge channel is connected to the second scraper and the other end is connected to the ilmenite container.

[0011] Furthermore, the third magnetic separation unit also includes a third scraper, a third discharge channel and a particle ore container. The third scraper is tangent to the surface of the high magnetic roller. One end of the third discharge channel is connected to the third scraper and the other end is connected to the particle ore container.

[0012] Furthermore, it also includes a spray component, which is arranged on the multi-stage magnetic separation component. The spray component includes a spray head, and spray heads are correspondingly provided above the low magnetic roller, the medium magnetic roller and the high magnetic roller.

[0013] Compared with the prior art, the present invention has the following advantages: The three-speed magnetic rollers, low, medium and high, are arranged in sequence to carry out fine processing for minerals with different magnetic properties, thereby improving the enrichment accuracy of ilmenite. The strength and arrangement sequence of the magnetic rollers can be freely adjusted according to the pulp composition and processing requirements, and it is suitable for a variety of mineral beneficiation processes. Through multi-stage adsorption and recovery, the beneficiation recovery rate of ilmenite is significantly improved, and the loss of useful minerals is reduced. At the same time, the magnetic rollers can be disassembled and replaced independently, which is convenient for maintenance and magnetic field adjustment.

[0014] The magnetic induction intensity of the medium magnetic roller is set to 1.0~1.3T, which is mainly used to effectively enrich ilmenite with medium magnetic properties and improve the ore dressing purity. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A perspective view of a magnetic separator for ilmenite beneficiation according to an embodiment of the present invention; Figure 2 This is a front view of a magnetic separator for ilmenite beneficiation proposed in an embodiment of the present invention; Figure 3 This is a right side view of a magnetic separator for ilmenite beneficiation according to an embodiment of the present invention; Figure 4 for Figure 3 Cross-sectional view along the AA direction; Figure 5 for Figure 4 Magnified view of point Ⅰ in the middle; Among them, 100, slurry flow channel, 200, multi-stage magnetic separation component, 300, spray component, 101, rubber pad, 102, mineral processing groove, 103, speed reduction strip, 104, elastic pressure block, 105, compression spring, 210, first magnetic separation unit, 211, low magnetic roller, 212, first scraper, 213, first discharge flow channel, 214, strong magnetic mineral container, 220, second magnetic separation unit, 221, medium magnetic roller, 222, second scraper, 223, second discharge flow channel, 224, ilmenite container, 230, third magnetic separation unit, 231, high magnetic roller, 232, third scraper, 233, third discharge flow channel, 234, granular ore container, 301, spray head.

[0016] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention but do not constitute a limitation of the present invention. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0018] In the description of the present invention, it should be understood that terms such as "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the present invention.

[0019] like Figure 1-Figure 5 As shown, a magnetic separator for ilmenite beneficiation proposed in this embodiment is intended to improve the screening efficiency and separation accuracy of ilmenite through graded magnetic separation, and effectively solve the problems of single structure, low beneficiation efficiency and poor adaptability of traditional magnetic separation equipment. The magnetic separator includes a slurry flow channel 100 and a multi-stage magnetic separation component 200, wherein the multi-stage magnetic separation component 200 is arranged in sequence along the length direction of the slurry flow channel 100, so as to realize the graded screening and enrichment of mineral particles with different magnetic properties in the slurry.

[0020] The slurry flow channel 100 is an open channel structure with a slurry inlet at one end and a tailings discharge outlet at the other end. It is used to transport ilmenite-containing slurry. Its cross-section is designed to be a gradually sloped shape to facilitate the natural stratification of particles of different densities, which helps to facilitate the efficient separation of subsequent magnetic separation units.

[0021] The multi-stage magnetic separation assembly 200 is the core beneficiation structure of the device, which is fixedly installed above the slurry flow channel 100 and includes a first magnetic separation unit 210, a second magnetic separation unit 220 and a third magnetic separation unit 230, which are arranged in sequence along the slurry flow direction.

[0022] The first magnetic separation unit 210 is a coarse selection section, equipped with a low-magnetic roller 211, whose magnetic induction intensity is set to 0.5-0.8T, suitable for adsorbing and removing mineral particles with strong magnetism in the ore pulp, such as magnetite, hematite, etc. The low-magnetic roller 211 is driven to rotate by an independent motor. During operation, the strong magnetic minerals are adsorbed to its surface under the action of the magnetic roller and are scraped off as the magnetic roller rotates, completing the first stage of strong magnetic impurity removal.

[0023] The second magnetic separation unit 220 is a selection section, equipped with a medium magnetic roller 221, whose magnetic induction intensity is set to 1.0~1.3T, mainly for the effective enrichment of medium-magnetic ilmenite. The medium magnetic roller 221 is also driven to rotate by a motor, and its magnetic design is more suitable for separating ilmenite from non-magnetic gangue minerals such as quartz and feldspar. After the medium magnetic roller 221 adsorbs the ilmenite particles, it enters the concentrate collection device during rotation, thereby improving the ore dressing purity.

[0024] The third magnetic separation unit 230 is a scanning section, which is equipped with a high magnetic roller 231 with a magnetic induction intensity of up to 1.5 to 1.8 T. It is used to recover missed fine-grained ilmenite particles. Such particles are usually not completely recovered during the first and second magnetic separation processes. The high magnetic field intensity of the high magnetic roller 231 can effectively enhance the adsorption capacity of fine particles and recycle them into the fine ore collection container, further improving resource utilization and ilmenite recovery rate.

[0025] During operation, the slurry is injected from the inlet of the slurry flow channel 100 and passes through the three magnetic separation units in sequence. Under the action of gravity and flow inertia, the slurry flows slowly along the flow channel. Each magnetic separation unit relies on the difference in magnetic field strength to adsorb and separate different magnetic minerals in stages. The speed of each magnetic roller is controlled by a motor to achieve efficient and continuous mineral stripping.

[0026] In this embodiment, the structural configuration of the slurry flow channel 100 is further optimized to enhance the durability of the magnetic separation operation and the centralization of the slurry separation.

[0027] Specifically, the slurry flow channel 100 is provided with a rubber pad 101 and a mineral processing groove 102, wherein the rubber pad 101 is covered at the bottom of the flow channel to form a direct contact surface with the slurry. The rubber pad 101 is made of a highly elastic and wear-resistant rubber material, and has good corrosion resistance, high temperature resistance and erosion resistance. It can extend the service life of the equipment and reduce the abrasive damage to the bottom of the flow channel caused by long-term slurry erosion.

[0028] The mineral processing groove 102 is arranged in the middle area of the slurry flow channel 101 with a trough-type depression structure. Its depth and width are adjusted according to the size of the magnetic separation roller and the slurry flow rate. The low magnetic roller 211, the medium magnetic roller 221 and the high magnetic roller 231 are all installed in the mineral processing groove 102 so that the magnetic roller is closer to the slurry flow layer, thereby improving the effective coverage area and adsorption efficiency of the magnetic separation.

[0029] During actual use, after the slurry enters from one end of the flow channel, it flows slowly under the guidance of the rubber pad 101. The rubber surface has good flexibility, which can suppress the eddy current and jump of the slurry to a certain extent, forming a more stable and wall-adhering flow state; at the same time, the gravity in the slurry causes it to automatically converge into the mineral processing groove 102. Under the guidance and restriction of the groove, a concentrated, uniform, laminar slurry belt is formed, so that the low magnetic roller 211, the medium magnetic roller 221 and the high magnetic roller 231 can respectively perform accurate magnetic screening and separation on mineral particles of different magnetic grades.

[0030] This structure not only improves the magnetic separation efficiency, but also reduces equipment operation noise and wear risks. It is suitable for processing ilmenite slurry systems with wide particle size distribution and large flow rate changes.

[0031] The mineral processing groove 102 proposed in this embodiment is provided with an elastic pressing block 104. The elastic pressing block 104 is slidably connected to the inner wall of the mineral processing groove 102 along the vertical direction and can move up and down along the guide groove.

[0032] The elastic pressure block 104 is located between the mineral processing groove 102 and the rubber pad 101. It is made of high-strength and high-temperature resistant composite elastic material, has good rebound performance and deformation recovery ability, and can maintain a stable support state during long-term magnetic separation operation. The upper surface of the elastic pressure block 104 is arc-shaped and fits the lower surface of the rubber pad 101, so that it is always evenly stressed during compression or rebound, avoiding local deformation or excessive wear of the rubber pad 101.

[0033] A compression spring 105 is provided between the elastic pressure block 104 and the mineral processing groove 102. The compression spring 105 is a pre-tightened metal coil spring, and its two ends are fixedly connected to the bottom surface of the elastic pressure block 104 and the bottom of the mineral processing groove 102 by fasteners. The spring is in a certain compression state during initial installation and continuously pushes the elastic pressure block 104 upward.

[0034] Through the elastic force of the compression spring 105, the elastic pressure block 104 is always in a state of being pushed upward, so that the rubber pad 101 on its upper part is continuously subjected to an upward support force, so that the surface of the rubber pad 101 is closer to the rolling surfaces of the low magnetic roller 211, the middle magnetic roller 221 and the high magnetic roller 231; the close contact relationship effectively reduces the gap between the slurry layer and the magnetic roller, enhances the magnetic capture ability of the magnetic roller for mineral particles, and further improves the sorting accuracy and efficiency of magnetic separation.

[0035] In addition, the combined structure of the elastic pressure block 104 and the compression spring 105 also has an adaptive floating function. When the slurry flow rate fluctuates or the particles have a concentrated impact, the elastic pressure block 104 can give way appropriately under the compression of the spring to avoid damage to the structure caused by rigid impact. At the same time, it quickly returns to its original position after the impact ends, ensuring that the rubber pad 101 is always in the ideal position, thereby improving the operating stability and reliability of the entire machine.

[0036] The rubber pad 101 proposed in this embodiment is provided with speed reduction bars 103, which are evenly distributed on the upper surface of the rubber pad 101 in the form of a linear array. Specifically, the speed reduction bars 103 are arranged transversely along the flow direction of the slurry and are arranged at intervals to form a regularly arranged flow-blocking structure.

[0037] The speed reducer 103 is an integrated rubber convex strip structure, which is vulcanized and molded by the same or similar high-elasticity rubber material as the rubber pad 101. Its height is usually 2 to 5 mm, and its cross section can be semicircular, trapezoidal or arc-shaped, so as to effectively interfere with and adjust the slurry flow rate.

[0038] The setting of the speed reduction strips 103 ensures that during the magnetic separation process, the slurry will be blocked by the transverse ridges when flowing on the surface of the rubber pad 101, forcing its local flow velocity to decrease and forming certain eddies and retention areas between the speed reduction strips, so that the mineral particles, especially fine-grained ilmenite, can stay within the range of action of the magnetic roller for a longer time, thereby enhancing the contact opportunity between the magnetic separation particles and the magnetic roller, and improving the adequacy of the separation and the recovery rate.

[0039] In addition, the speed reduction strip 103 can also disturb the structure of the slurry layer, destroy the laminar flow state formed by the rapid flow of the slurry, promote the re-stratification of light and heavy particles, and facilitate the subsequent magnetic separation components to separate according to the magnetic strength. By working in conjunction with the low magnetic roller 211, the medium magnetic roller 221 and the high magnetic roller 231, the magnetic separation effect is further improved.

[0040] The first magnetic separation unit 210 proposed in this embodiment also includes a first scraper 212, a first discharge channel 213 and a strong magnetic mineral container 214, wherein the first scraper 212 is arranged tangentially to the outer surface of the low magnetic roller 211, and is used to promptly scrape off the strong magnetic minerals adsorbed on the surface of the low magnetic roller 211.

[0041] Specifically, the low magnetic roller 211 will adsorb strongly magnetic minerals in the slurry, such as magnetite, during high-speed rotation. These minerals are firmly attached to the roller surface under the action of the magnetic field. In order to prevent the accumulation of adsorbed materials from affecting the magnetic separation efficiency, the first scraper 212 is attached to the ore outlet side of the low magnetic roller 211. Without interfering with the magnetic field distribution, the mineral particles adsorbed on the surface of the low magnetic roller are promptly peeled off through mechanical contact.

[0042] The scraped magnetic particles fall directly into the first discharge channel 213 arranged below. One end of the first discharge channel 213 is connected to the scraping area of the first scraper 212, and the other end extends and conducts to the strong magnetic mineral container 214, thereby automatically collecting and removing the strong magnetic minerals.

[0043] The strong magnetic mineral container 214 is a ore storage box with an opening and closing device, which is used to temporarily store strong magnetic minerals such as magnetite rejected by the first magnetic separation unit 210, so as to facilitate subsequent unified transportation or processing.

[0044] The first magnetic separation unit can not only effectively separate strongly magnetic minerals from medium and weak magnetic minerals such as ilmenite, but also cooperate with the scraper and discharging system to achieve continuous operation, automatic cleaning and ore separation, thereby improving the magnetic separation efficiency and equipment stability.

[0045] The second magnetic separation unit 220 proposed in this embodiment further includes a second scraper 222 , a second discharge channel 223 and an ilmenite container 224 , which are used to efficiently separate and recover magnetic mineral particles such as ilmenite.

[0046] Among them, the second scraper 222 is set tangent to the outer surface of the medium magnetic roller 221, specifically located on the ore discharge side of the medium magnetic roller 221. The medium magnetic roller 221 will adsorb medium magnetic mineral particles such as ilmenite under the action of the magnetic field. The second scraper 222 is made of wear-resistant alloy material, and the blade is in contact with the roller surface, and the adsorbed particles are quickly scraped off through stable mechanical force.

[0047] The scraped ilmenite particles fall directly into the second discharge channel 223 arranged below it. The discharge channel 223 has an open trough structure at one end close to the scraper to smoothly receive the fallen mineral particles; the other end is guided to the ilmenite container 224 to achieve centralized collection and temporary storage of the magnetic substances in the target.

[0048] The ilmenite container 224 is arranged at the terminal portion of the discharge channel 223, and a discharge valve is optionally provided at the bottom of the container to achieve docking with the conveying equipment and improve continuous operation efficiency.

[0049] Through the above structure, the second magnetic separation unit 220 can effectively achieve efficient separation and separate recovery of ilmenite.

[0050] The third magnetic separation unit 230 proposed in this embodiment further includes a third scraper 232 , a third discharge channel 233 and a particle ore container 234 , which are used to further screen and recover the fine ilmenite particles remaining in the ore slurry.

[0051] Among them, the high magnetic roller 231 has a high magnetic induction intensity (1.5~1.8T), and mainly acts on ilmenite particles with smaller particle size and weaker magnetism. These fine particles are not completely extracted in the first magnetic separation unit 210 and the second magnetic separation unit 220, and are still deposited on the surface of the rubber pad 101 with the flow of slurry. The strong magnetic field of the high magnetic roller 231 can absorb these residual fine particles, ensuring thorough mineral processing and high mineral recovery rate.

[0052] The third scraper 232 is arranged tangentially to the surface of the high magnetic roller 231 and is made of wear-resistant material. It can efficiently peel off the fine-grained ilmenite particles adsorbed on the high magnetic roller 231. The scraper is set at the discharge side of the high magnetic roller 231 to prevent the magnetic particles from falling back to non-target areas.

[0053] The scraped fine ilmenite particles slide down the third discharge channel 233 , which has an open trough structure at one end close to the scraper. One end of the discharge channel 233 is connected to the third scraper 232 , and the other end leads to the particle ore container 234 .

[0054] The particle ore container 234 is specially used to recover fine-grained ilmenite with a particle size of less than 100 μm but still having utilization value, thereby effectively reducing resource loss.

[0055] By setting up the third magnetic separation unit 230, deep recovery of residual magnetic particles in the ore pulp is achieved, thereby improving the overall recovery rate and resource utilization of the magnetic separator.

[0056] The magnetic separator proposed in this embodiment also includes a spray assembly 300, which is arranged above the multi-stage magnetic separation assembly 200 and is specifically used to perform real-time flushing and cooling of the low magnetic roller 211, the medium magnetic roller 221 and the high magnetic roller 231 to keep the surface of the magnetic roller clean and the working temperature stable, thereby improving the magnetic separation efficiency and service life.

[0057] The spray assembly 300 includes multiple spray heads 301, with at least one spray head 301 disposed above each magnetic roller. The positions of the spray heads 301 precisely correspond to the surface of the magnetic roller, forming a uniform water mist coverage area. The spray angle and water flow rate are adjusted according to the viscosity of the slurry and the degree of impurities, ensuring that the magnetic roller does not experience a decrease in mineral processing efficiency due to impurity accumulation during continuous operation.

[0058] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0059] The present invention and its embodiments are described above. This description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by this and, without departing from the purpose of the present invention, designs structures and embodiments similar to this technical solution without inventiveness, they shall fall within the scope of protection of the present invention.

Claims

1. A magnetic separator for ilmenite beneficiation, characterized by: It comprises a slurry flow channel (100) and a multi-stage magnetic separation component (200), wherein the multi-stage magnetic separation component (200) is arranged on the slurry flow channel (100); The multi-stage magnetic separation assembly (200) comprises a first magnetic separation unit (210), a second magnetic separation unit (220) and a third magnetic separation unit (230), wherein the first magnetic separation unit (210) comprises a low magnetic roller (211), the second magnetic separation unit (220) comprises a medium magnetic roller (221), and the third magnetic separation unit (230) comprises a high magnetic roller (231), and the low magnetic roller (211), the medium magnetic roller (221) and the high magnetic roller (231) are sequentially arranged on the slurry flow channel (100) along the slurry transmission direction; The magnetic induction intensity of the low magnetic roller (211) is 0.5 to 0.8 T, the magnetic induction intensity of the medium magnetic roller (221) is 1.0 to 1.3 T, and the magnetic induction intensity of the high magnetic roller (231) is 1.5 to 1.8 T.

2. The magnetic separator for ilmenite beneficiation according to claim 1, characterized in that: The slurry flow channel (100) is provided with a rubber pad (101) and a beneficiation groove (102), and the rubber pad (101) is covered on (202); The low magnetic roller (211), the medium magnetic roller (221) and the high magnetic roller (231) are all arranged in the mineral processing groove (102).

3. The magnetic separator for ilmenite beneficiation according to claim 2, characterized in that: An elastic pressing block (104) is provided in the mineral processing groove (102), the elastic pressing block (104) is slidably connected in the mineral processing groove (102), and the elastic pressing block (104) is located between the mineral processing groove (102) and the rubber pad (101); A compression spring (105) is provided between the elastic pressure block (104) and the mineral processing groove (102), and both ends of the compression spring (105) are connected to the elastic pressure block (104) and the mineral processing groove (102).

4. The magnetic separator for ilmenite beneficiation according to claim 2, characterized in that: The rubber pad (101) is provided with a deceleration strip (103), and the deceleration strip (103) is arranged in a linear array on the surface of the rubber pad (101).

5. The magnetic separator for ilmenite beneficiation according to claim 1, characterized in that: The first magnetic separation unit (210) further comprises a first scraper (212), a first discharge channel (213) and a strong magnetic mineral container (214), wherein the first scraper (212) and the surface of the low magnetic roller (211) are tangent to each other, and one end of the first discharge channel (213) is connected to the first scraper (212) and the other end is connected to the strong magnetic mineral container (214).

6. The magnetic separator for ilmenite beneficiation according to claim 1, characterized in that: The second magnetic separation unit (220) further includes a second scraper (222), a second discharge channel (223) and an ilmenite container (224), wherein the second scraper (222) and the surface of the middle magnetic roller (221) are tangent to each other, and one end of the second discharge channel (223) is connected to the second scraper (222) and the other end is connected to the ilmenite container (224).

7. The magnetic separator for ilmenite beneficiation according to claim 1, characterized in that: The third magnetic separation unit (230) further includes a third scraper (232), a third discharge channel (233) and a particle ore container (234), wherein the third scraper (232) and the surface of the high magnetic roller (231) are tangent to each other, and one end of the third discharge channel (233) is connected to the third scraper (232), and the other end is connected to the particle ore container (234).

8. The magnetic separator for ilmenite beneficiation according to claim 1, characterized in that: The invention also includes a spray assembly (300), wherein the spray assembly (300) is arranged on the multi-stage magnetic separation assembly (200), and the spray assembly (300) includes a spray head (301). The spray heads (301) are correspondingly arranged above the low magnetic roller (211), the medium magnetic roller (221), and the high magnetic roller (231).

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